Lubricating system for internal-combustion engines



June 2, 1925. 1,540,618

. G. E. HAMILTON LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINES Filed Feb, 21, 1924 2 Sheets-Sheet l J attoli MM! jwumatoas June 2, 1925. 1540,6518

- G. E. HAMILTON LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINES File e 1924 2 Sheets-Sheet 2 :LIIIIIIQ/ l a'tented lune 2:, i925.

rarest rules. I

GEORGE E. HAMILTON, DE'JACKSOIWILLE, FLOR-IDA.

LUBRIGATING-SY$TEJVL FOR INTERNAL-COMBUSTION ENGINES.

Application filed February 21, 192%. Serial No. 694,339.

To all whom it may concern:

Be it known that I, Grouse E. HAMimron,

a citizen of the United. States, residing at Jacksonville, in the county of Duval and 5 State of Florida, have invented certain new invention, such as will enable others skilled.

and useful improvements in Lubricating Systems for Internal-Combustion Engines; and I do hereby declare the following to be a full, clear, and exact description of the in the art to which it appertains to make and use the same.

This invention relates to improvements in lubricating systems for internal combustion engines, and particularly to the lubricating system of engines of that type employing a fiy-wheel magneto.

Ehe primary object of the invention isthe provision of novel means by which a constant circulation. of the greater portion of ,the' oil in the system may be maintained through the crank case of the engine, and by Whichthe quantity of lubricant in the system may be determined by the operator of the automobile without leaving lllS seat.

A further object of the invention is the provision of means by which the stated object may he obtained, which shall be simple,.durable and eficient, and which may be readily and quickly applied to the engine.

'With the-above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinaftcr fully described. and claimed, and i1 lustrated in the accompanying drawings, wherein: I

Figure 1 is a view in side elevation of an internal combustion engine equipped with a lubricating system constructed in accordance with my invention,

Figure 2 is a sectional view taken on the manner in which the discharge and of the circulating pipe enters the breather pipe,

Figure 6 is a detail viewin side elevation of the out ofi valve in the circulating pipe,

illustrating particularly the connection betweenthe control rod and the plug of the valve, and v Figure 7 is a vertical sectional view of the sight feed apparatus.

Referring to the drawings by reference numerals, 1 designates an internal combus tion engine of that type employing a-flywheel magneto. The engine embodies a crank case 2, a fly-wheel housing 3,.a crank shaft 4, a fly-wheel 5 secured to the crank shaft, and magnets 6 secured to the fly wheel. i"

the oil fiows front in engines of this type, the crank case 2 to the fly-wheel housing 3, and in order to prevent the accumulation of more than a predetermined quantity 0i oil in the fly-wheel housing I employ means for conveying the oil from the bottom of the fly-wheel housing to the forward end of the crank case. This means comprises a curved tube 7 which at its lower end is in ,communication with the bottom of the flywheel housing 3 and which at its upperend is in communication with a tube 8 which discharges into thebreather pipe 9 of the engine. A IF-coupling 10 connects the discharge end of the tube 7 with the intake end of the tube 8, and also connects the discharge end of the 1 tube 7 with a .tube 11 which discharges at 5 its upper end into a sight feed apparatus 12. The discharge end of the tube 8 passes into the breather pipe 9 in the mannergillustrated, in Figure 5,

- and the down-turned end 8 of the tube prevents the tube from being. accidentally detached from the breather pipe. 3 v

r The oil in theflyswh'eel housing .3 is kept in constant motion during' the operation of the engine by the flywheel 5 and the magnets 6 carried thereby. An oil dip 0r;intake member 13: isconhected to. the intakeend of the tube 'l by; a coupling 14, audit is threaded into the drain openinglo in the ,hottom of the flywheel housing 3. The upper end oi the dip or intake member .13extends for a considerable distance into the 1 fly-wheel housing 3, it is enlarged laterallyas shown in Figure: .4; and is rovided with a side opening 16 through w ich the oil is forced under such pressure as to flow upwardly through the tube i and thence torwardly through the tube einto the forward end oi:

the crank case 2, and owing ther'etoa con- 'lllSlllC' the return of the oil to the forward through a guide 26. The opening end of the crank case 2 when the engine. is idling or when the quantity of oil i u the sys-. tem is'low, an auxiliary connection is est-ablished betweeirthe interior of the fi vwheel housing 3 andtlie tube Tby means of a tube- 17 which is connected to the tube '7 by' means of acoupling 18 and which is connected with the interior of" the flywheel housing 3 by means of an elbow 19. To insure the passage of oil into the upper open end of the elbow an oil deflecting plate 20 is secured within the fly-wheel housing 3 as shown in Figures 3 and 4. ,The tube .17 is equipped with acut-off valve 21 which is opened whenever the flow of oil through the dip or intake member-13 .the tube 7 and the tube 8 falls below the maximum carrying capacity of these parts.

The sight feed apparatus 12' comprises a casing 22, a glass panel 23,- a float 2t and l nder' normal conditions, that is when there is no oil in th'e'casing 22. the lower bottom wall' of the casing 22. Y Tlie'upper end of the rod 25 passes through the upper side of. the'l-ateral wall of the casing 22 and 27 through which the upper endof the rod 25 passes vents-the casing 22, and the rod is provided.

'- .with a conical portion which closes the opening when a. predetermined quantityof oil accumulates'inthe casing 22. T-heifloat- 2-tis threaded upon the rod 25 to permit it.

p to be 'adjustedto any point in the length of the rod. Undernormal-conditions; the .oil will notjflow through the pipe 11 into the sight feed'apparatusl2, and when it is tie- ;and this may be done 31 of-the valve 29 "sired to determine the quantity of oil in the system the valve 29 in the pipe 8 is closed. through the medium of a rod 30 which is connected to the stem 7 v by a universal coupling 32. :The-rod'30' extends upwardly and rearwardly from the valve 29 to a point within convenientreaeh otthe opera-tor ofthe auto-.v mobile, and this end is provided with a'han- -dle.33-, as shown in dotted lines in Figure 1 and full line in Figure 2. The sight feed to the i'nstru ment-boaid of the automobile. The quantity of 'oil in thesystem is determine 3' from the are merely illustrative and end of the rod 25 rests upon the paratus when the engine is operating at. a.

It'has been observed that low rate of speed; when the 011 18 very low in the systennit bubbles and foams on reaching the sight feed apparatus. The valve 28 prevents the escape of oil through the opening 27 in the sight feed apparatus. and the opening per-' mits the oil to quickly fiow'back into the system on the openingof the valve 29, D I Due to the plate 20. which together with the adjacent lower portion of housing 3 forms a pocket into which the oil is forced by the rotation of the fly-wheel 5 and the magnets 6 and with which the elbow l9- commumcated. the oil is forced through theelbow under a greater pressure than it is forced through the intake member 13, and owing thereto acirculation of the oil through the system may be maintained when the oil 1 in the idling. a

It should be understood that the drawings do not give the system is low and when the engine is exactproportions.

st-ruction. it being my case. a breather-pipe communicating with'the fronten'd of the crank case,.and a second tube-extending from theupper end of the first tube to the breather pipe and having-its front end down-turnedfand entering. the

breather pipe v v 2. An internal combustion engine having 'a'- crank case, a fly-wheel. housing atthe rear end of v and. "communicating with the crank case, tubes communieating with thelower Furthermore, the said drawings are illustrative of a preferred eon-.

expectation that va, 'rious changes and modifications-may be made' without departing fromtlie spirit and scope at the rear end of and commun'L" the intake member toapoint above the crank f side of the housing. at relatively spaced Q points, a plate within the housing over the intake of one of said tubes, a valve located in said lastnamedtube, and a'third tube communicating with said first named'tubes and with the fro'ntend of the crank ease. I

3. An internal combustion engine having emme v g fly-wheel communicating With one end of the In testimony whereof I afiix my signature crank case, oil intake members communicatin presence of two Witnesses.

ing With'the housing, a tube extending from one of said intake members to the other end GEORGE HAMILTON of the crank ease, a second tube ezdunding Witnesses:

from the other of said intake me" 3%1'5 to Mrs. A. IVL ELDER,

file first tube, and a valve in said seemd tube. WM. WH TMORE. 

